Will this plug straight into my factory wiring?

Yes. This mounts at the OEM location and uses the factory connector — no rewiring needed. Plug it in and you're done.

Do I need to remove the old light to install this?

Yes, you'll need to disconnect the factory unit and remove it from the mounting bracket. Swap in the LED unit, reconnect, and secure it back in place. Basic hand tools only.

What if the LED doesn't work after I install it?

Test your connection first — make sure the harness is fully seated. If the light still won't fire, the circuit may have an issue upstream. Check your fuse box and trace back through the brake light circuit before assuming the unit is bad.